derma rpxcreamsizeof it and I mix it with a piece size of the Obagi nu-derm blender now a Baz youmakes two products of these one of them you have to buy through the doctor'soffice that's this one because it has it contains hydroquinone the other one iscalled blend FX and you can buy it online I don't know anything about it Idon't use it I've heard people say they didn't like it as well but it did notwork as well as the Obagi blender that you get from the dermatologists officeyou cannot buy this online you're not supposed to be able to you are onlysupposed to get it through a doctor's office so I take a pea-sized amount ofthis in a pea